Metallic sash



Nov. 28, 1933.

A. M. LANE METALLIC SASH Filed March 7, 1932 HA5 QT ORMEKS.

Patented Nov. 28, 1933 UNITED STATES PATENT 0 FFICE 1,936,631 METALLIC SASH Alfred M. Lane, St. Louis County, Mo. Application March 7, 1932. Serial .No. 597,217

12 Claims. (Cl. 189-68) This invention relates principally to metallic window sashes. It has for its principal objects to prevent loss of heat through the frame and pane of the sash, and the accumulation of mois- 5 ture or frost on the inner or roomside of said frame and pane, to provide said sash with an auxiliary pane that is located opposite to and spaced from the main pane and is r adily detachable for cleaning purposes or when not needed, 0 and to provide for neatness of appearance, cheapness of construction, increased strength and rigidity, and compactness of design. The invention consists in the parts and in the combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specification and wherein like s bols refer to like parts wherever they occur,

Fig. 1 is a roomside elevation'of a metallic window sash embodying my invention,

Fig. 2 is an enlarged roomside elevation, partly in section, of one of the lowerc'orner portions of said sash,

Fig. 3 is a vertical cross-section through the lower. rail of the sash, r I

Fig. 4 is a horizontal cross-section through one of the side rails of said sash; and

Fig. 5 is a vertical fragmentary section on the line 5-5 in Fig. 4., I

Referring to the accompanying drawing, my invention is shown in connection with a metallic window sash comprising. a mainframe A made of a frame" member 1 that is covered or encased within a metallic ornamental and protective frame or'casing member 2, whichserves as a seat for a pane 3. The tubular frame member 1 is preferably made of a length of seamless steel tubing which is bent to the desired shape and has its abutting ends welded or otherwise secured together. The ornamental frame or casing member 2 for the tubular frame member 1 may be made of separate len ths whose adjacent ends are mitered and welded together at the corners of said frame member. For purposes of assembly, the frame member 2 issplit longitudinally along the inner or roomside thereof, forming flanges 4 that are bent around the inner or roomside of the frame member 1 to hold the-two frame members together. The pane 3 has its marginal edges set inputty 5 that is held in place between a backing flange 6 formed integral with the frame member 2 and angle-shaped glazing strips 7 that areremovably secured to said frame member by screws 8. The. frame member 2 is also provided with an edge flange 9 adapted to cooperate with the window frame (not shown).

In order to prevent the loss of heat through the frame A and the accumulation of moisture or frost on the inner or roomside thereof, 611 said side of said main frame is covered with an auxiliary frame B that is removably securedin position preferably by means of screws 19. This auxiliary sash frame B is of substantially channel-shape in cross-section andis spaced from the main frame A of the sash by means of a lighter frame'C also of substantially channel-shaped section which fits within the channel of said auxiliary frame with the edges of its side flanges 11 seated within longitudinal recesses 12 pro- '(0 vided therefor in the adjacent inner or roomside of the ornamental casing member 2 of the main frame A. The. channel-shaped auxiliary frame B is spaced from the channel-shaped spacing frame C by means of strips of suitable heat insulating material 13, such, for instance, as bakelite. By this arrangement, heat transference by conduction from the mainframe member A to the channel-shaped spacing frame C is considerably reduced due to the comparatively small area of metal of the spacer in contact with said main frame; and heat transference by conduction through said spacing frame and the auxiliary frame B is minimized by means of the strips of insulating material 13, thereby maintaining said auxiliary frame substantially at room'temperature and thus preventing theaccumulation of the .moisture or frost upon said auxiliary frame.

Moisture and frost are also prevented from accumulating on the roomside of the pane 3 of the main sash frame A by means of a second pane is that is disposed opposite to and spaced inwardly from said main sash pane. This second sash pane 14 is mounted within a, frame D that is removably mounted in the opening in the auxiliary sash frame B and has an edge flange 15 that overlaps the inner face of the auxiliary frame B. As shown in the drawing, the second or inner sash pane 14 has its marginal edges set in putty 18 that is held in place between a backing flange 17 on the frame D and glazing strips 18 that are removably secured to said frame. These glazing strips 18 are provided with longitudinal grooves adapted to receive a rib 19 on the frame D and are removably secured in position preferably by means of screws 20. It is noted that the pane frame D is spaced from the main sashframe A V and pane 3 ther of, thereby preventing heat transference by conduction through the two frames and the panes thereof. It is also noted thatthe flange along the inner side of the frame D for the inner sash pane 14 bears flatwise against the inner face of the auxiliary sash frame B, thus forming a dead air insulating space be- 5 tween the main sash frame A and said auxiliary sash frame B and the panes thereof.

The frame D for the inner sash pane is removably secured in position in the auxiliary frame B preferably by means of fastening devices in the form of cam plates 21 that are interposed between said auxiliary frame and the spacing frame C therefor. These plates are riveted to the inner ends of headed and shouldered studs 22 that are rotatably mounted in said auxiliary frame B. The heads of said studs are disposed flush with the inner side of the auxiliary frame member B and are provided with grooves whereby they are adapted to be manipulated by meansof a screw driver. The cam plates 21 are adaptedfor'rotation with theoperating studs 22 therefor and are shaped so that a portion thereof will enter recesses 23 provided therefor in the inner pane frame D, and thus firmly lock said frame to'the "f auxiliary frame B. 25 a The hereinbefore described construction has numerous advantages. It materially reduces heat transference by conduction through the auxiliary and main frame members of the sash and through I the panes thereof and thus prevents the accumulation of moisture or frost on the roomside of the sash and on the two panes thereof; and it also permits the inner sash pane to be readily removed when it is not needed and when it is desired to clean the opposing surfaces of the two sash panes; and it also provides a neat, lightweight sash that is well adapted to resist strains tending to distort the frames thereof. The tubular frame member of the main sash frame is protected by. and con- 1 1 cealed within the ornamental frame member thereof which may be of any desired ornamental design or any shape to adapt the sash foruse with different types and designs of windows; and the two frame members of the main sash frame may be made of different metals. For example, the ornamental frame or casing. member of the main sash frame may be made of rust resisting metal, while the tubular frame member of said main sash frame may be made of steel tubing of any desired cross-sectional shape.

Obviously, the hereinbefore described construction admits of considerable modification without departing fromthe invention; and the invention is not restricted to sashes, but is applicable to other metallic frames and constructions, wherein it is desirable to prevent loss of heat through metallic frames and the accumulation of frost or moisture on the inner sides thereof.

What I claim is:

l. A metallic sash-comprising a main frame and an auxiliary frame removably secured to the roomside of said main frame, aspacer provided with flanges connected by a web portion, said spacer being interposed between said main frame and said auxiliary frame with its flanges bearing edgewise against said main frame, and heat insulating means-interposed between said auxiliary frame and the web of said spacer.

2. A metallic sash-comprising a main frame and an auxiliary frame-removably.secured to the roomside of said mainframe, and spacing members interposed between. said frame and said auxiliary frame, said-spacing members being provided with flanges that bear edgewise against said main frame.

3. A metallic sash comprising a main frame and an auxiliary frame removably secured to the roomside of said main frame, and a spacing frame interposed between said main frame and said auxiliary frame, said spacing frame being provided with flanges that bear edgewise against said main frame.

4. A metallic sash comprising a main frame and an auxiliary frame removably secured to the roomside of said main frame, a spacing frame interposed between said main frame and said auxiliary frame, said spacing frame being provided with flanges that bear edgewise against said main frame, and heat insulating material interposed between said spacing frame and said auxiliary frame.

5. A metallic sash comprising a main frame and anauxiliary frame of substantially channelshaped. cross-section removably secured to the roomside of'said main frame, a spacing frame of substantially channelshaped cross-section located withinthe channel of. said auxiliary frame with its flanges bearing edgewise against said main frame, andinsulating' materialinterposed between said spacing frame and saidauxiliary frame. V 100 6. A metallic sash comprising amain frame and an auxiliary frame removably secured to the inner side thereof, a frame interposed between said main frame and said auxiliary frame for spacing said frames apart, said spacing frame being of substantially channel-shaped cross-section and being arranged with its flanges bearing edgewise against the roomside of said main frame, and insulating material interposed between said spacing frame andsaid auxiliary frame.

'7. A metallic sash comprising, a, main frame and an auxiliary frame removably secured .to the roomside of said main frame, and a spacing frame interposed between saidlmain' frame and said auxiliary frame, said spacing frame being provided with longitudinal flanges, said main frame being provided with recesses adapted to receive said flanges, which bear edgewise against the bottoms of said recesses, and heat insulating material interposed betweensaid spacing frame and said auxiliary frame.

8. A metallicsash comprising a main frame and an auxiliary frame removably secured-to the roomside of said main frame,a spacing frame interposed between said, main frame and said auxiliary frame, said spacing frame being ,provided with longitudinal, side flanges, and said main frame being provided along the roomside thereof with recesses adapted to receive said flanges, which bear edgewise against the bottoms of said recesses.

9. A. metallic sash comprising a main frame, a pane mounted therein, an auxiliary frame removablysecured to the room of. said main frame, means for spacing said auxiliary frame from-said main frame, and a third frame mounted in said auxiliary frame and spaced fromsaid main frame and the pane therein, a pane mounted. in said third frame, and means for removably securing said third frame in said auxiliary frame.

10. A metallic sash comprising a main frame. a pane mount'edtherein, an auxiliary frame removably secured to the roomside of said main 7 frame, means for spacing saidauxiliary frame from said main frame, a thirdframe mounted in said auxiliary frame and having. a'flange overlapping the roomside thereof, said third'fram e being spaced from said main frame and the pane therein, a pane mounted in said third frame,

ifs

substantially channel-shaped cross-section secured to the roomside of said main frame with its opening facing said side of said main frame, a spacing frame of substantially channel-shaped cross-section located within the channel of said auxiliary frame with its flanges bearing edgewise against the roomside of said main frame, heat insulating material interposed between said auxiliary frame and said spacing frame, a frame removably mounted in said auxiliary frame, and a pane mounted in said frame.

' ALFRED M. LANE. 

